Remove unnecessary comme in webgl_extrude_splines

examples/webgl_geometry_extrude_splines.html

@@ -66,7 +66,7 @@
 			new THREE.Vector3( 0, 40, -40 ),
 			new THREE.Vector3( 0, 140, -40 ),
 			new THREE.Vector3( 0, 40, 40 ),
-			new THREE.Vector3( 0, -40, 40 ),
+			new THREE.Vector3( 0, -40, 40 )
 		] );
 
 		sampleClosedSpline.type = 'catmullrom';